From: Peter Zijlstra <peter@programming.kicks-ass.net>

This makes MS_ASYNC happy again.

Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 mm/msync.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff -puN mm/msync.c~mm-msync-cleanup-fix mm/msync.c
--- a/mm/msync.c~mm-msync-cleanup-fix
+++ a/mm/msync.c
@@ -88,8 +88,10 @@ asmlinkage long sys_msync(unsigned long 
 			down_read(&mm->mmap_sem);
 			vma = find_vma(mm, start);
 		} else {
-			if (start >= end)
+			if (start >= end) {
+				error = 0;
 				goto out_unlock;
+			}
 			vma = vma->vm_next;
 		}
 	}
_